CVE-2020-6099Network attack vector

Code execution via heap buffer overflow

Published Apr 18, 2022 · Updated Apr 15, 2025

BIMx Desktop Viewer 2019.2.2328 allows remote attackers to execute code through a specially crafted model file. The file-format parser mishandles attacker-controlled resource values, causing an integer overflow that becomes a heap buffer overflow during model loading. Exploitation requires a victim to open the malicious file; successful exploitation can execute attacker-controlled code with the viewer’s user privileges.

CVSS severity8.8
High
EPSS probability1.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

BIMx Desktop Viewer 2019.2.2328 allows remote attackers to execute code through a specially crafted model file. The file-format parser mishandles attacker-controlled resource values, causing an integer overflow that becomes a heap buffer overflow during model loading. Exploitation requires a victim to open the malicious file; successful exploitation can execute attacker-controlled code with the viewer’s user privileges.

The record

CVE
CVE-2020-6099
Published
Apr 18, 2022
Updated
Apr 15, 2025
Vendor
Graphisoft
Product
BIMx Desktop Viewer
Classifications
CWE-680, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 18, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 15, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=2019.2.2328

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Graphisoft · BIMx Desktop Viewerversion=2019.2.2328

Published CVSS scores

8.8Cisco TalosCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-680Integer Overflow to Buffer Overflow
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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